Cotton variety st 5818glt

ABSTRACT

The disclosure provides a new cotton variety ST 5818GLT. The disclosure relates to seeds, plants, plant cells, plant tissue, harvested products and cotton lint as well as to hybrid cotton plants and seeds obtained by repeatedly crossing plants of variety ST 5818GLT with other plants. The disclosure also relates to plants of variety ST 5818GLT reproduced by vegetative methods, including but not limited to tissue culture of regenerable cells or tissue from cotton variety ST 5818GLT.

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority to U.S. Patent Application No.62/640,822, filed on Mar. 9, 2018, which is hereby incorporated byreference in its entirety.

FIELD OF THE DISCLOSURE

The disclosure relates to the field of plant breeding and, morespecifically, to cotton variety ST 5818GLT. The disclosure furtherrelates to vegetative reproductions of cotton variety ST 5818GLT,methods for tissue culture of cotton variety ST 5818GLT, methods forregenerating a plant from such a tissue culture and to phenotypicvariants of cotton variety ST 5818GLT. The disclosure also relates toprogeny of cotton variety ST 5818GLT and the hybrid varieties obtainedby crossing cotton variety ST 5818GLT as a parent line with plants ofother varieties or parent lines.

BACKGROUND OF THE DISCLOSURE

Cotton is an important, fiber producing crop. Due to the importance ofcotton to the textile industry, cotton breeders are increasingly seekingto obtain healthy, good yielding crops of excellent quality.

Cotton is commonly reproduced by self-pollination and fertilization.This type of sexual reproduction facilitates the preservation of plantand variety characteristics during breeding and seed production. Thepreservation of these characteristics is often important to plantbreeders for producing cotton plants having desired traits. Othermethods of producing cotton plants having desired traits are also usedand include methods such as genetic transformation via Agrobacteriuminfection or direct transfer by microparticle bombardment (see, e.g., US2009/0049564)

Due to environment, the complexity of the structure of genes andlocation of a gene in the genome, among other factors, it is difficultto predict the phenotypic expression of a particular genotype. Inaddition, a plant breeder may only apply his skills on the phenotype andnot, or in a very limited way, on the level of the genotype. As aresult, a particular plant breeder cannot breed the same variety twiceusing the same parents and the same methodology. Thus, a newly bredvariety is an unexpected result of the breeding process. Indeed, eachvariety contains a unique combination of characteristics.

By carefully choosing the breeding parents, the breeding and selectionmethods, the testing layout and testing locations, the breeder may breeda particular variety type. In addition, a new variety may be tested inspecial comparative trials with other existing varieties in order todetermine whether the new variety meets the required expectations.

SUMMARY OF THE VARIOUS ASPECTS OF THE DISCLOSURE

The disclosure provides for cotton variety ST 5818GLT, products thereof,and methods of using the same. ST 5818GLT is an upland cotton variety.

In one aspect, the disclosure provides a seed of cotton variety ST5818GLT, wherein a representative sample of said seed will be depositedunder ATCC Accession Number PTA ______.

The disclosure also provides a plant grown from the seed of cottonvariety ST 5818GLT and a plant part thereof. The disclosure alsoprovides for a progeny of cotton variety ST 5818GLT. In another aspect,the disclosure provides a plant or a progeny retaining all or all butone, two or three of the distinguishing characteristics or all or allbut one, two or three of the morphological and physiologicalcharacteristics of cotton variety ST 5818GLT and methods of producingthat plant or progeny.

In one aspect, the disclosure provides a plant or a progeny having allthe physiological and morphological characteristics of variety ST5818GLT when grown under the same environmental conditions. In anotheraspect, the plant or progeny has all or all but one, two or three of thephysiological and morphological characteristics of cotton variety ST5818GLT when measured under the same environmental conditions. Inanother aspect, the plant or progeny has all or all but one, two orthree of the physiological and morphological characteristics as listedin Table 1 for variety ST 5818GLT when measured under the sameenvironmental conditions.

In another aspect, a plant of ST 5818GLT or a progeny thereof has atleast 7, 8, or more of the following distinguishing characteristics whencompared with Reference Variety ST 6182GLT as shown in Table 1: 1)shorter mature plant (from cotyledonary node to terminal); 2) latermaturity based on percentage of open bolls; 3) larger seed index; 4)lower lint percent; 5) finer fiber (micronaire); 6) longer fiber (upperhalf mean length); 7) stronger fiber; and 8) lower fiber elasticity.

In another aspect, cotton variety ST 5818GLT contains a transgene whichconfers resistance to herbicides glyphosate and glufosinate, and forlepidopteran insect control, referred to in the aggregate as the traitpackage GLYTOL® TWINLINK® (GLT).

In another aspect, the plant of cotton variety ST 5818GLT or a partthereof, or progeny thereof comprises resistance to Bollworm, FallArmyworm, Pink Bollworm, and Tobacco Bud Worm.

In another aspect, the disclosure provides for a plant part obtainedfrom cotton variety ST 5818GLT, wherein said plant part is a leaf, apart of a leaf, pollen, an ovule, an embryo, a meristem, a petiole, ashoot or a part thereof, a stem or part thereof, a root or a partthereof, a root tip, a seed, a part of a seed, a pod, a hypocotyl,cotyledon, a pistil, an anther, and a flower or part thereof and thelike. In another aspect, the plant part obtained from cotton variety ST5818GLT is a cell or tissue culture.

The disclosure also provides for a cotton plant regenerated from thecell or tissue culture of cotton variety ST 5818GLT, wherein theregenerated plant has all the physiological and morphologicalcharacteristics of cotton variety ST 5818GLT, when grown under the sameenvironmental conditions, as well as methods for regenerating cottonvariety ST 5818GLT.

The disclosure further provides a vegetatively propagated plant ofvariety ST 5818GLT having all or all but one, two, or three of thephysiological and morphological characteristics of cotton variety ST5818GLT, when grown under the same environmental conditions.

In another aspect, the disclosure provides for cotton lint or fiberproduced by the plant of cotton variety ST 5818GLT. Also encompassedherein is the textile produced from the unique fiber of cotton varietyST 5818GLT.

The disclosure further provides a method of producing a commodity plantproduct (e.g., lint, cotton seed oil) comprising obtaining a plant ofcotton variety ST 5818GLT or a part thereof and producing said commodityplant product therefrom.

Definitions

“Cotton” refers herein to plants of the species Gossypium spp.

A “seed of ST 5818GLT” refers to a cotton seed which can be grown into aplant of variety ST 5818GLT, wherein a representative sample of viableseed of said variety is to be deposited under ATCC Accession Number PTA______.

“Reference Variety for ST 5818GLT” refers herein to variety ST 6182GLTfrom BASF Agricultural Solutions Seed US LLC, which has been planted ina trial together with cotton variety ST 5818GLT. The characteristics ofcotton variety ST 5818GLT were compared with the characteristics ofvariety ST 6182GLT as shown in Table 1. The distinguishingcharacteristics between cotton variety ST 5818GLT and the ReferenceVariety ST 6182GLT are shown in Table 2.

A plant having “all the physiological and morphological characteristics”of a referred-to-plant means a plant showing the physiological andmorphological characteristics of the referred-to-plant when grown underthe same environmental conditions, preferably in the same experiment orfield; the referred-to-plant can be a plant from which it was derived,e.g., the progenitor plant, the parent, the recurrent parent, the plantused for tissue- or cell culture, etc. A physiological and morphologicalcharacteristic can be a numerical characteristic or a non-numericalcharacteristic. In one aspect, a plant has “all but one, two or three ofthe physiological and morphological characteristics” of areferred-to-plant, or “all the physiological and morphologicalcharacteristics” of Table 1 or “all or all but one, two or three of thephysiological and morphological characteristics” of Table 1.

The physiological and/or morphological characteristics mentioned aboveare commonly evaluated at significance levels of 1%, 5% or 10% if theyare numerical (quantitative), or for having an identical degree (ortype) if not numerical (not quantitative), if measured under the sameenvironmental conditions.

“Distinguishing characteristics” or “distinguishing morphological and/orphysiological characteristics” refers herein to the characteristicswhich distinguish (i.e., are different) between the new variety and theother cotton variety, such as the Reference Variety, when grown underthe same environmental conditions. The distinguishing characteristicsbetween cotton variety ST 5818GLT and cotton variety ST 6182GLT aredescribed herein and also can be seen in Table 2. When comparing cottonvariety ST 5818GLT with different varieties, the distinguishingcharacteristics will be different. In one aspect, the distinguishingcharacteristics may therefore include at least one, two or more (or all)of the characteristics listed in Table 1.

Cotton variety ST 5818GLT has the following distinguishingcharacteristics when compared to Reference Variety, ST 6182GLT as shownin Table 2: 1) shorter mature plant (from cotyledonary node toterminal); 2) later maturity based on percentage of open bolls; 3)larger seed index; 4) lower lint percent; 5) finer fiber (micronaire);6) longer fiber (upper half mean length); 7) stronger fiber; and 8)lower fiber elasticity, when grown under the same environmentalconditions.

Thus, a cotton plant “comprising the distinguishing characteristics ofcotton variety ST 5818GLT” (such as a progeny plant) refers herein to aplant which does not significantly differ from said variety in thedistinguishing characteristics above. Therefore, in one aspect, a plant(such as a progeny plant of cotton variety ST 5818GLT) is provided whichdoes not significantly differ from cotton variety ST 5818GLT in thedistinguishing characteristics above.

Similarity and differences between two different plant lines orvarieties can be determined by comparing the number of morphologicaland/or physiological characteristics (e.g., the characteristics aslisted in Table 1) that are the same or that are different between thetwo plant lines or varieties when grown under the same environmentalconditions.

“Allele” refers to any one or more alternative forms of a gene locus,all of which alleles relate to one trait or characteristic. In a diploidcell or organism, two alleles of a given gene occupy corresponding locion a pair of homologous chromosomes.

“Backcrossing” refers to the process in which a breeder repeatedlycrosses hybrid progeny, for example, a first generation hybrid (F1),back to one of the parents of the hybrid progeny. Backcrossing can beused to introduce one or more single locus conversions from one geneticbackground into another.

“Cm to FFB” refers to the measure of centimeters to first fruitingbranch.

“Crossing” refers to the mating of two parent plants.

“Cross-pollination” refers to fertilization by the union of two gametesfrom different plants.

“Desired agronomic characteristics” refers to yield, maturity, pestresistance and lint percent among others (vary from crop to crop andplant to plant), which are desired in a commercially acceptable crop orplant. For example, improved agronomic characteristics for cottoninclude yield, maturity, fiber content, and fiber qualities.

“Diploid” refers to a cell or organism having two sets of chromosomes.

“Disease resistance” refers to the ability of plants to restrict theactivities of a specified pest, such as insect, fungus, virus, orbacterial.

“Disease tolerance” refers to the ability of plants to endure aspecified pest (e.g., insect, fungus, virus or bacteria) or an adverseenvironmental condition and still perform and produce in spite of thisdisorder.

“Donor parent” refers to the parent of a variety which contains the geneor trait of interest which is desired to be introduced into a secondvariety.

“E1” refers to elongation, a measure of fiber elasticity (i.e.,high=more elastic).

“Emasculate” refers to the removal of plant male sex organs or theinactivation of the organs with a cytoplasmic or nuclear genetic factorconferring male sterility or a chemical agent.

“F1 Hybrid” refers to the first generation progeny of the cross of twonon-isogenic plants.

“Fallout (Fo)” refers to the rating of how much cotton has fallen on theground at harvest.

“FB5 cm to FFN” refers to the measure of centimeters from main stem tofirst fruiting node at fruiting branch 5.

“Fiber characteristics” refers to the fiber qualities such as strength,fiber length, micronaire, fiber elongation, uniformity of fiber andamount of fiber.

“Fiber span length” refers to the distance spanned by a specificpercentage of fibers in a test specimen, where the initial startingpoint of the scanning in the test is considered 100 percent as measuredby a digital fibergraph.

“2.5% Fiber span length” refers to the longest 2.5% of a bundle offibers expresses in inches as measured by a digital fibergraph.

“Fiber elongation” or “E1” refers to the elongation of the fiber at thepoint of breakage in the strength determination as measured by HVI.

“Fiber strength (Str)” refers to the force required to break a bundle offibers. Fiber strength is expressed in grams per tex on an HVI.

“Fruiting nodes” refers to the number of nodes on the main stem fromwhich arise branches that bear fruit or boll in the first position.

“Genotype” refers to the genetic constitution of a cell or organism.

“Gin turnout” refers to the fraction of lint in a machine harvestedsample of seed cotton (e.g., lint, seed, and trash).

“Haploid” refers to a cell or organism having one set of the two sets ofchromosomes in a diploid.

“Length” refers to the fiber length in inches using a (High VolumeInstrumentation) HVI.

“Linkage” refers to a phenomenon wherein alleles on the same chromosometend to segregate together more often than expected by chance if theirtransmission was independent.

“Lint index” refers to the weight of lint per seed in milligrams.

“Lint percent” refers to the percentage of the seed cotton that is lint,handpicked samples.

“Lint yield” refers to the measure of the quantity of fiber produced ona given unit of land, presented in pounds of lint per acre.

“Lint/boll” refers to the weight of lint per boll.

“Maturity rating” refers to a visual rating near harvest on the amountof open boils on the plant. The rating ranges from 1 to 5, 1 being earlyand 5 being late.

“Micronaire (Mic)” refers to a measure of fiber fineness (i.e.,high=coarse fiber) as measured with an HVI machine. Within a cottoncultivar, micronaire is also a measure of maturity. Micronairedifferences are governed by changes in perimeter or in cell wallthickness, or by changes in both. Within a variety, cotton perimeter isfairly consistent, and maturity will cause a change in micronaire.Consequently, micronaire has a high correlation with maturity within avariety in cotton.

“Mr” refers to fiber maturity ratio.

“Phenotype” refers to the detectable characteristics of a cell ororganism, which characteristics are the manifestation of geneexpression.

“Plant height” refers to the average height in meters of a group ofplants.

“Plant part” includes any part of a plant, such as a plant organ, aplant cell, a plant protoplast, a plant cell tissue culture or a tissueculture from which a whole plant can be regenerated, a plant cell thatis intact in a plant, plant callus, vegetative propagation, a leaf, apart of a leaf, pollen, an ovule, an embryo, a meristem, a petiole, ashoot or a part thereof, a stem or part thereof, a root or a partthereof, a root tip, a seed, a part of a seed, a pod, a hypocotyl,cotyledon, a pistil, an anther, and a flower or part thereof and thelike. Also, any developmental stage is included, such as seedling,mature plants or leaves.

“Progeny” refers to a plant obtained from a plant designated ST 5818GLT.A progeny may be obtained by regeneration of cell culture or tissueculture or parts of a plant of said variety or by producing the seeds ofa plant of said variety. In further aspects, progeny may also encompassplants obtained from crossing of at least one plant of said variety withanother cotton plant. A progeny may comprise a mutation or a transgene.

“Quantitative Trait Loci (QTL)” refers to genetic loci that control tosome degree numerically representable traits that are usuallycontinuously distributed.

“Recurrent parent” refers to the repeating parent (variety) in abackcross breeding program. The recurrent parent is the variety intowhich a gene or trait is desired to be introduced.

“Regeneration” refers to the development of a plant from tissue culture.

“Resistance” and “tolerance” are used interchangeably to describe plantsthat show no symptoms or significant reduced symptoms to a specifiedbiotic pest, pathogen, abiotic influence or environmental conditionscompared to a susceptible plant.

“Seed/boll” refers to the number of seeds per boll, handpicked samples.

“Seed cotton/boll” refers to the weight of seed cotton per boll,handpicked samples.

“Seed weight” refers to the weight of 100 seeds in grams.

“Self-pollination” refers to the transfer of pollen from the anther tothe stigma of the same plant or a plant of the same genotype.

“Single Locus Converted (Conversion) Plant” refers to plants which aredeveloped by traditional breeding techniques e.g., backcrossing, or viagenetic engineering or through mutation breeding, wherein essentiallyall of the desired morphological and physiological characteristics ofthe parent variety are recovered, in addition to the one or more genestransferred into the parent via e.g., backcrossing technique. A singlelocus may comprise one gene, or in the case of transgenic plants, one ormore transgenes integrated into the host genome at a single site(locus). It is understood that only the addition of a furthercharacteristic (e.g., addition of gene conferring a furthercharacteristic, such as a disease resistance gene), but also thereplacement/modification of an existing characteristic by a differentcharacteristic is encompassed herein.

“Stringout rating” also sometimes referred to as “Storm Resistance”refers to a visual rating prior to harvest of the relative looseness ofthe seed cotton held in the boll structure on the plant. The ratingvalues are from 1 to 5 (tight to loose in the boll).

“Substantially equivalent” refers to a characteristic that, whencompared, does not show a statistically significant difference (e.g.,p=0.05) from the mean.

“T1” refers to a measure of fiber strength, grams per tex (high=strongerfiber).

“Tissue Culture” refers to a composition comprising isolated cells ofthe same or a different type or a collection of such cells organizedinto parts of a plant. Tissue culture of various tissues of cotton andregeneration of plants therefrom is well known and widely published(see, e.g., Rajasekaran, et. al., (2001), NH: Science Publishers,269-290). Similarly, methods of preparing cell cultures are known in theart.

“Transgene” refers to a genetic locus comprising a sequence which hasbeen introduced into the genome of a cotton plant by transformation.

“Uniformity ratio (Ur)” refers to the proportion of uniform lengthfibers. The uniformity ratio is determined by dividing the 50% fiberspan length by the 2.5% fiber span length.

“USDA descriptors” are the plant variety descriptors for cottonGossypium spp.) as published by the US Department of Agriculture,Agricultural Marketing Service, Plant Variety Protection Office,Beltsville, Md. 2075, and which can be downloaded from the world wideweb at ams.usda.gov. underservices/plant-variety-protection/pvpo-c-forms under cotton.

“Vegetative Nodes” refer to the number of nodes from the cotyledonarynode to the first fruiting branch on the main stem of the plant.

“Vegetative propagation” or “vegetative reproduction” are usedinterchangeably herein and refer to the method of taking a part of aplant and allowing that plant part to form at least roots, and alsorefer to the plant or plantlet obtained by that method. Optionally, thevegetative propagation is grown into a mature plant. The skilled personis aware of what plant parts are suitable for use in the method.

DETAILED DESCRIPTION OF THE DISCLOSURE

The disclosure relates to a plant of cotton variety ST 5818GLT, whereina representative sample of seeds of said variety will be deposited underthe Budapest Treaty, with ATCC Accession Number PTA ______. ST 5818GLTis an upland cotton variety.

The disclosure also relates to a seed of cotton variety ST 5818GLT,wherein a representative sample of said seed will be deposited underBudapest Treaty, with ATCC Accession Number PTA ______.

The disclosure also provides a method of producing cotton seed,comprising the steps of using the plant grown from seed of cottonvariety ST 5818GLT, of which a representative sample of seed of saidvariety will be deposited under Accession Number PTA ______, as arecurrent parent in crosses with other cotton plants different fromcotton variety ST 5818GLT, and harvesting the resultant cotton seed.

The disclosure further provides a plant grown from the seed of cottonvariety ST 5818GLT.

Also provided is a plant part obtained from cotton variety ST 5818GLT,wherein said plant part is a leaf, a part of a leaf, pollen, an ovule, acell, an embryo, a meristem, a petiole, a shoot or a part thereof, astem or part thereof, a root or a part thereof, a root tip, a seed, apart of a seed, a pod, a hypocotyl, cotyledon, a pistil, an anther, anda flower or part thereof and the like. In another aspect, the plant partobtained from cotton variety ST 5818GLT is a cell or tissue culture.

The disclosure further relates to a cotton variety ST 5818GLT, whichwhen compared to its Reference Variety, ST 6182GLT, has the followingdistinguishing characteristics as shown in Table 2: 1) shorter matureplant (from cotyledonary node to terminal); 2) later maturity based onpercentage of open bolls; 3) larger seed index; 4) lower lint percent;5) finer fiber (micronaire); 6) longer fiber (upper half mean length);7) stronger fiber; and 8) lower fiber elasticity, when grown under thesame environmental conditions. Also encompassed are parts of that plant.

In one aspect, a plant of cotton variety ST 5818GLT or a progenythereof, comprises all of the following morphological and/orphysiological characteristics as shown in Table 1, when grown under thesame environmental conditions. A part of this plant is also provided.

In another aspect, cotton variety ST 5818GLT contains a transgene whichconfers resistance to herbicides glyphosate and glufosinate, and forlepidopteran insect control, referred to in the aggregate as the traitpackage GLYTOL® TWINLINK® (GLT).

In another aspect, the plant of cotton variety ST 5818GLT or a partthereof, or progeny thereof comprises resistance to Helicoverpa zea(Bollworm), Spodoptera frugiperda (Fall Armyworm), Pectinophoragossypiella (Pink Bollworm), and Heliothis virescens (Tobacco Bud Worm).

The disclosure further provides a cotton plant which does notsignificantly differ from the physiological and morphologicalcharacteristics of the plant of variety ST 5818GLT, when grown under thesame environmental conditions. In a particular aspect, the plants aremeasured in the same trial (e.g., the trial is conducted as recommendedby USDA). The disclosure comprises a part of said plant.

The disclosure also provides for a tissue or cell culture comprisingregenerable cells of cotton variety ST 5818GLT. The cells of cottonvariety ST 5818GLT used to start the culture can be selected from anyplant part suitable for vegetative reproduction, or, in a particularaspect, can be one or more of an embryo, a meristem, a cotyledon, ahypocotyl, pollen, a leaf, an anther, a root, a root tip, a pistil, apetiole, a flower, a fruit, a seed, a pod, or a stem. In anotherparticular aspect, the tissue culture does not contain somaclonalvariation or has reduced somaclonal variation. The skilled person isfamiliar with methods to reduce or prevent somaclonal variationincluding regular reinitiation.

In one aspect, the disclosure provides a cotton plant regenerated fromthe tissue culture or cell culture of variety ST 5818GLT, wherein theregenerated plant has all or all but one, two, or three, of thephysiological and morphological characteristics of cotton variety ST58188GLT (or all or all but one, two or three of the physiological andmorphological characteristics as listed in Table 1), when grown underthe same environmental conditions. Optionally, the plant has one, two ormore of the physiological and morphological characteristics that areaffected by mutation or transformation.

Cotton variety ST 5818GLT, or its progeny, or a plant having all thephysiological and/or morphological characteristics but one, two, or morewhich are different from those of cotton variety ST 5818GLT, can also bereproduced using vegetative reproduction methods. Therefore, thedisclosure provides for a method of producing a plant, or plant part ofcotton variety ST 5818GLT, comprising vegetative propagation of cottonvariety ST 5818GLT. Vegetative propagation comprises regenerating awhole plant from a plant part of variety ST 5818GLT, from a progeny orfrom a plant having all the physiological and/or morphologicalcharacteristics of said variety.

The disclosure also provides for a vegetatively propagated plant ofvariety ST 5818GLT (or from progeny of cotton variety ST 5818GLT or fromor a plant having all but one, two or three of the physiological andmorphological characteristics of that variety), wherein the plant hasall of the morphological and physiological characteristics of cottonvariety ST 5818GLT, when grown under the same environmental conditions.In another aspect, the propagated plant has all but one, two or three ofthe morphological and physiological characteristics of cotton variety ST5818GLT, when grown under the same environmental conditions.

In another aspect, the disclosure provides a method of producing acotton plant, comprising crossing a plant of variety ST 5818GLT withsecond cotton plant at least once, selecting a progeny cotton plant fromsaid crossing, and optionally allowing the progeny cotton plant to formseed. Optionally, the progeny is crossed twice, thrice, or four, five,six or seven times, and allowed to set seed.

In yet another aspect, the disclosure provides a method of producing acotton plant, comprising selfing a plant of variety ST 5818GLT one ormore times, and selecting a progeny cotton plant from said selfing. Inone aspect, the progeny retains all the distinguishing characteristicsof cotton variety ST 5818GLT, when grown under the same environmentalconditions. In a different aspect, the progeny plant comprises all (orall but one, two or three) of the physiological and morphologicalcharacteristics of cotton variety ST 5818GLT of Table 1.

In other aspects, the disclosure provides a method of producing progenycotton plant of variety ST 5818GLT comprising crossing the plant ofvariety ST 5818GLT with other, different or distinct cotton plant, andfurther selfing or crossing these progeny cotton plant with other,distinct plant and subsequent selection of derived progeny cotton plant.The process of crossing cotton variety ST 5818GLT derived progeny plantswith itself or other distinct cotton plants and the subsequent selectionin the resulting progenies can be repeated up to 7 or 8 times in orderto produce cotton variety ST 5818GLT derived cotton plants. Inparticular, the disclosure provides for a progeny plant that retains allthe essential morphological and physiological characteristics of cottonvariety ST 5818GLT, or in another aspect, a progeny plant that retainsall, or all but one, two or three of the morphological and physiologicalcharacteristics as listed in Table 1, when grown under the sameenvironmental conditions.

Also provided is a method of producing a hybrid cotton variety,comprising repeatedly crossing plants of cotton variety ST 5818GLT withplants of a different variety or varieties or with plants of anon-released line or lines. In practice, three different types of hybridvarieties may be produced (see, e.g., Briggs and Knowles, Chapter 18,supra). The “single cross hybrid” produced by two different lines, the“three-way hybrid”, produced by three different lines such that firstthe single hybrid is produced by using two out of the three linesfollowed by crossing this single hybrid with the third line, and the“four-way hybrid” produced by four different lines such that first twosingle hybrids are produced using the lines two by two, followed bycrossing the two single hybrids so produced. Each single, three-way orfour-way hybrid variety so produced and using cotton variety ST 5818GLTas one of the parent lines contains an essential contribution of varietyST 5818GLT to the resulting hybrid variety is encompassed.

The morphological and/or physiological differences between two differentindividual plants described herein (e.g., between cotton variety ST5818GLT and its progeny) or between a plant of variety ST 5818GLT orprogeny of said variety, or a plant having all or all but one, two orthree of the morphological and physiological characteristics of cottonvariety ST 5818GLT, (or all, or all but one, two or three of thecharacteristics as listed in Table 1) and another known variety caneasily be established by growing said variety next to each other or nextto the other variety (in the same field, under the same environmentalconditions), preferably several locations which are suitable for cottoncultivation, and measuring the morphological and/or physiologicalcharacteristics of a number of plants. Thus, the disclosure comprisescotton plant having one, two or three physiological and/or morphologicalcharacteristics which are different from those of the plant of varietyST 5818GLT and which otherwise has all the physiological andmorphological characteristics of the plant of variety ST 5818GLT, whengrown under the same environmental conditions. In another aspect, thedifferent characteristic(s) is/are result of breeding with cottonvariety ST 5818GLT and selection of progeny cotton plant comprising one,two or three characteristics which are different that in cotton varietyST 5818GLT. In another aspect, the different characteristic is theresult of mutation (e.g., spontaneous mutation or a human inducedmutation through e.g., targeted mutagenesis or traditional mutagenesissuch as chemically or radiation induced mutagenesis), or it is theresult of transformation.

The disclosure provides for methods of producing plants which retain all(or all but one, two or three) of the morphological and physiologicalcharacteristics of the plant described herein, but which are stillgenetically closely related to cotton variety ST 5818GLT. Therelatedness can, for example, be determined by fingerprinting techniques(e.g., making use of isozyme markers and/or molecular markers such asSNP markers, amplified fragment length markers (AFLP) markers,microsatellites, minisatellites, random amplified polymorphic DNA (RAPD)markers, restriction fragment length polymorphism (RFLP) markers andothers). A plant is “closely related” to cotton variety ST 5818GLT ifits DNA fingerprint is at least 80%, 90%, 95% or 98% identical to thefingerprint of that variety. In another aspect, AFLP markers are usedfor DNA fingerprinting (see, e.g., Vos et al., 1995, Nucleic AcidResearch 23: 4407-4414). A closely related plant may have a Jaccard'sSimilarity index of at least about 0.8, preferably at least about 0.9,0.95, 0.98 or more (see, e.g., Pisanu et al. ISHS 2004, Acta Hort. 660).

By crossing and/or selfing single traits may be introduced into cottonvariety ST 5818GLT (e.g., using backcrossing scheme), while retainingthe remaining morphological and physiological characteristics of saidvariety and/or retaining one or more or all distinguishingcharacteristics. A single trait converted plant may thereby be produced.A single locus may comprise one gene, or in the case of transgenicplants, one or more transgenes integrated into the host genome at asingle site (locus). For example, disease resistance genes may beintroduced, genes responsible for one or more quality traits, yield,etc.

Any pest or disease resistance genes may be introduced into a plant ofvariety ST 5818GLT, progeny of said variety or into a plant comprisingone, two or three of the morphological and physiological characteristicsof cotton variety ST 5818GLT (e.g., as listed in Table 1). Resistance toone or more the following diseases or pests may be introduced into theplants described herein: Alternaria macrospora, Anthracnose, AscochytaBlight, Xanthomonas axonopodis (Bacterial Blight) Race 1, and/or Race 2,Diplodia Boll Rot, Fusarium Wilt, Phymatotrichum Root Rot, Pythium spp.,Cotton seedling disease (Rhizoctonia solani), Southwestern Cotton Rust,Thielayiopsis basicola, Verticillium Wilt (Verticillium dahliae),Meloidogyne spp. (Root-Knot Nematode), Boll Weevil, Bollworm(Helicoverpa spp), Cotton Aphid (Aphis gossypii), Cotton Fleahopper,Cotton Leafworm, Cutworm, Spodoptera frugiperda (Fall Armyworm),Reniform Nematode, Grasshopper, Lygus, Pectinophora gossypiella (PinkBollworm), Cotton Spider Mite (Tetranychus spp.), Cotton Whitefly(Bemisia tabaci), Stink Bug, Tobacco Thrips (Thrips tabaci), and/orHeliothis virescens (Tobacco Bud Worm). Other resistances, againstpathogenic viruses, fungi, bacteria, nematodes, insects or other pestsmay also be introduced, or other traits.

In one aspect, the disclosure relates to a plant of cotton variety ST5818GLT comprising at least a first transgene, wherein the cotton plantotherwise has all the physiological and morphological characteristics ofthe cotton variety ST 5818GLT as listed in Table 1. In a particularaspect, a plant comprising a single locus conversion is provided. Asingle locus conversion may comprise a transgenic gene which has beenintroduced by genetic transformation into the cotton variety ST 5818GLTor a progenitor thereof. In a particular aspect, the single locusconversion confers male sterility, herbicide tolerance, insectresistance, pest resistance, disease resistance, modified fatty acidmetabolism, modified carbohydrate metabolism, or modified cotton fibercharacteristics.

The disclosure provides for a method of introducing a single locusconversion into cotton variety ST 5818GLT comprising:

-   -   (a) crossing the ST 5818GLT plants, grown from seed deposited        under Accession Number PTA ______, with plants of another cotton        line that comprise a desired single locus to produce F1 progeny        plants;    -   (b) selecting F1 progeny plants that have the single locus to        produce selected F1 progeny plants;    -   (c) crossing the selected F1 progeny plants with the ST 5818GLT        plants to produce first backcross progeny plants;    -   (d) selecting for first backcross progeny plants that have the        desired single locus and the physiological and morphological        characteristics of cotton variety ST 5818GLT as listed in Table        1, when grown under the same environmental conditions, to        produce selected first backcross progeny plants; and    -   (e) repeating steps (c) and (d) one or more times (e.g., one,        two, three, four, etc. times) in succession to produce selected        third or higher backcross progeny plants that comprise the        desired single locus and all of the physiological and        morphological characteristics of cotton variety ST 5818GLT as        listed in Table 1, when grown under the same environmental        conditions.        Plants produced by this method have all of the physiological and        morphological characteristics of cotton variety ST 5818GLT,        except for the characteristics derived from the desired trait.

In one aspect, a plant of cotton variety ST 5818GLT may also be mutatedand mutated seeds or plants may be selected in order to change one ormore characteristics of said variety. Similarly, cotton variety ST5818GLT may be transformed and regenerated, whereby one or more chimericgenes are introduced into the variety or into a plant comprising one,two or three of the physiological and morphological characteristics(e.g., as listed in Table 1). Transformation can be carried out usingmethods well known in the art, such as Agrobacterium tumefaciensmediated transformation or biolistics, followed by selection of thetransformed cells and regeneration into plants (see, e.g., Sakhanokho etal., 2004, Reynaerts et al., 2000, Umbeck et al., 1988). Examples oftransgenic events transformed in this way are “LLCotton25,” USDA-APHISpetition 02-042-01p, “Cot 102,” USDA-APHIS petition 03-155-01p, and“281-24-236,” USDA-APHIS petition 03-036-01p combined with“3006-210-23,” USDA-APHIS petition 03-036-02p. Information regardingthese and other transgenic events referred to herein may be found at theU.S. Department of Agriculture's (USDA) Animal and Plant HealthInspection Service (APHIS) website (www.aphis.usda.gov/aphis/home/). An“Event” is defined as a (artificial) genetic locus that, as a result ofgenetic engineering, carries a foreign DNA comprising at least one copyof the gene(s) of interest. Other methods of genetic transformation arewell known in the art such as microprojectile bombardment (see, e.g.,U.S. 2009/0049564).

In another aspect, a desired trait (e.g., gene(s) conferring pest ordisease resistance, herbicide, fungicide or insecticide tolerance, etc.)can be introduced into cotton variety ST 5818GLT, or progeny of saidvariety, by transforming said variety or progeny of said variety with atransgene that confers the desired trait, wherein the transformed plantsretains all or all but one, two or three of the physiological and/ormorphological characteristics of cotton variety ST 5818GLT or theprogeny of the said and contains the desired trait.

The disclosure also provides for a method of producing a cotton plantcomprising introducing a transgene conferring the desired trait into theplant, resulting in a plant with the desired trait and all or all butone, two or three of the physiological and morphological characteristicsof cotton variety ST 5818GLT, when grown under the same environmentalconditions. In another aspect, the disclosure provides for a method ofproducing a cotton plant from cotton variety ST 5818GLT comprisinggenetically transforming a desired trait in regenerable cell or tissueculture from a plant described herein, resulting in a cotton plant thatretains all the physiological and morphological characteristics ofcotton variety ST 5818GLT, except for the characteristics changed by theintroduction of the desired trait.

In a further aspect, the desired trait is modified cotton fibercharacteristics, herbicide resistance, insect or pest resistance,disease resistance, including bacterial or fungal disease resistance,male sterility, modified carbohydrate metabolism and modified fatty acidmetabolism. Such traits and genes conferring such traits are known inthe art (see, e.g., US 2009/0049564).

In a particular aspect, the desired trait is herbicide tolerance and thetolerance is linked to a herbicide such as glyphosate, glufosinate,sulfonylurea, dicamba, phenoxy proprionic acid, cyclohexanedione,triazine, benzonitrile, bromoxynil or imidazalinone.

In another particular aspect, the desired trait is insect resistanceconferred by a transgene encoding a Bacillus thuringiensis (Bt)endotoxin, a derivative thereof, or a synthetic polypeptide modeledthereon.

The disclosure also provides for a method of producing an inbred cottonplant derived from the cotton variety ST 5818GLT comprising:

-   -   (a) preparing a progeny plant derived from cotton variety ST        5818GLT, a representative sample of seed of said variety will be        deposited under ATCC Accession Number PTA ______, by crossing        cotton variety ST 5818GLT with a cotton plant of a second        variety;    -   (b) crossing the progeny plant with itself or a second plant to        produce a seed of a progeny plant of a subsequent generation;    -   (c) growing a progeny plant of a subsequent generation from said        seed and crossing the progeny plant of a subsequent generation        with itself or a second plant; and    -   (d) repeating steps (b) and (c) for an additional 3-10        generations with sufficient inbreeding to produce an inbred        cotton plant derived from the cotton variety ST 5818GLT.

The disclosure also provides for cotton lint or fiber produced by cottonvariety ST 5818GLT. Also provided is the textile produced from theunique fiber of cotton variety ST 5818GLT.

The disclosure also provides for a method of producing a commodity plantproduct (e.g., lint, cotton seed oil, seed), comprising obtaining aplant of cotton variety ST 5818GLT or a part thereof, and producing saidcommodity plant product therefrom.

All documents (e.g., patent publications, non-patent literature) areherein incorporated by reference in their entirety.

-   US Department of Agriculture, Agricultural Marketing Service,    “Objective Description of Variety Cotton (Gossypium spp.)”, world    wide web at    ams.usda.gov/services/plant-variety-protection/pvpo-c-forms, under    cotton.-   Briggs, F. N., and Knowles, P. F., “Introduction to Plant Breeding”,    Rheinhold Publishing Corporation, 1967.-   Burdett, L. P., “Cotton Variety 02T15,” U.S. Pub. No. 20090049564.-   Pisanu, A. B., et. al., “Yield and Biometric Characteristics of 9    Clones Selected from the Population of “Spinoso sardo” Artichokes,    Acta Hort., 2004, ISHS 660, pp. 83-89.-   Reynaerts, et. al., “Improved Method for Agrobacterium Mediated    Transformation of Cotton,” 2000, Patent application number WO    0071733.-   Sakhanoko, H. F., et. al., “Induction of Somatic Embryogenesis and    Plant Regeneration in Select Georgia and Pee Dee Cotton Lines”, Crop    Science, 2004, vol. 44, pp. 2199-2205.-   Stam, P., “Marker-assisted introgression: speed at any cost?”    Proceedings of the Eucarpia Meeting on Leafy Vegetable Genetics and    Breeding, Noordwijkerhout, The Netherlands, 19-21 Mar. 2003. Eds.    Th. J. L. van Hintum, A. Lebeda, D. Pink, J. W. Schut. P117-124.-   Trolinder, et al., “Herbicide Tolerant Cotton Plants having Event    EE-GH1,” 2004, U.S. Pat. No. 6,818,807-   Umbeck, et. al., “Genetic Engineering of Cotton Plants and Lines”,    Patent application number EP0290355.-   Vos, P., et al., “AFLP: A New Technique for DNA Fingerprinting”,    Nucleic Acids Research, 1995, vol. 23(21), pp. 4407-4414.

Deposit Information

A total of 2500 seeds of variety of ST 5818GLT will be depositedaccording to the Budapest Treaty by the Applicant on ______ at theAmerican Type Culture Collection (ATCC), 10801 University Boulevard,Manassas, Va. 20110, USA. The deposit will be assigned ATCC AccessionNumber PTA ______. Seed of cotton variety ST 5818GLT is located at theBASF Maricopa Cotton Breeding Station, 880 N Power Road, Bapschule,Ariz. 85121, with lot number XF7AW6150F.

Access to this deposit will be available during the pendency of theapplication to persons determined by the Director of the U.S. PatentOffice to be entitled thereto upon request. Subject to 37 C.F.R. §1.808(b), all restrictions imposed by the depositor on the availabilityto the public of the deposited material will be irrevocably removed upongranting of the patent. The deposit will be maintained for a period of30 years, or 5 years after the most recent request, or for theenforceable life of the patent, whichever is longer, and will bereplaced if it becomes nonviable during that period. Applicant does notwaive any rights granted under this patent or under the Plant VarietyProtection Act (7 U. S. C. § 2321 et seq.).

Development of Cotton Variety St 5818GLT

The disclosure described herein has been obtained by a general breedingprocess comprising the steps outlined below (see, e.g., Introduction toPlant Breeding, 1967, Chapter 11, Briggs and Knowles, RheinholdPublishing Corporation).

Parent plants, which have been selected for good agronomic and fiberquality traits are manually crossed in different combinations. Theresulting F1 (Filial generation 1) plants are self-fertilized and theresulting F2 generation plants, which show a large variability onaccount of optimal gene segregation, are planted in a selection field.

These F2 plants are observed during the growing season for health,growth vigor, plant type, plant structure, leaf type, stand ability,flowering, maturity, seed yield, boll type, boll distribution, bollsize, fiber yield and fiber quality. Plants are then selected. Theselected plants are harvested, and the bolls analyzed for fibercharacteristics and the seed cleaned and stored. This procedure isrepeated in the following growing seasons, whereby the selection andtesting units increase from individual plants in the F2, to multipleplant containing ‘lines’ (descending from one mother plant) in the F5and the number of units decrease from approximately 2500 plants in theF2 to 20 lines in the F5 by selecting about 10-20% of the units in eachselection cycle.

The increased size of the units, whereby more seed per unit isavailable, allows the selection and testing in replicated trials on morethan one location with a different environment and a more extensive andaccurate analysis of the fiber quality.

The lines or candidate varieties become genotypically more homozygousand phenotypically more homogeneous by selecting similar plant typeswithin a line and by discarding the so called off-types from the veryvariable F2 generation on to the final F7 or F8 generation.

Depending on the intermediate results the plant breeder may decide tovary the procedure described above, such as by accelerating the processby testing a particular line earlier or retesting a line another year.He may also select plants for further crossing with existing parentplants or with other plants resulting from the current selectionprocedure.

By the method of recurrent backcrossing (see, e.g., Briggs and Knowles,supra, in chapter 13, “The Backcross Method of Breeding”), the breedermay introduce a specific trait or traits into an existing valuable lineor variety, while otherwise preserving the unique combination ofcharacteristics of this line or variety. In this crossing method, thevaluable parent is recurrently used to cross it at least two or threetimes with each resulting backcross F1, followed by selection of therecurrent parent plant type, until the phenotype of the resulting F1 issimilar or almost identical to the phenotype of the recurrent parentwith the addition of the expression of the desired trait or traits.

Cotton variety ST 5818GLT was developed through a backcross breedingapproach with a conventional recurrent proprietary parent line, whichwas crossed with transgenic trait donor to convey tolerance to theherbicides glyphosate and glufosinate and for lepidopteran insectcontrol, referred to in aggregate as the trait package GLYTOL® TWINLINK®(GLT). The GLYTOL® trait is also known as transgenic event GHB614, andthe TWINLINK® trait consists of two events, 304-40 and GHB119.

The recurrent parent was backcrossed to the donor two times and progenywere allowed to self-pollinate. BC2F2 plants, homozygous for the GLTtrait package, were identified and the BC2F2:3 progeny rows were grownfor seed increase in Arizona for production of yield trial and breederseed.

Replicated yield trials were conducted on the BC2F2:4 sister lines attesting locations in the Mid-South and Southeastern states of the cottonbelt. One particular BC2F2 derived line performed very well acrosstesting environments, exhibiting stable and high yield, excellent fiberquality, and good performance in adverse growing conditions similar tothe conventional parent. Due to excellent performance in both irrigatedand non-irrigated conditions especially in the Southeast, the variety ST5818GLT was selected.

The most similar variety to cotton variety ST 5818GLT is referred to asST 6182GLT, a variety from BASF Agricultural Solutions Seed US LLC. InTable 1, a comparison between cotton varieties ST 5818GLT and ST 6182GLTis shown based on a trial in the USA. In Table 2, the distinguishingcharacteristics between cotton variety ST 5818GLT and Reference VarietyST 6182GLT is shown.

In one aspect, the disclosure provides a plant having the physiologicaland morphological characteristics of cotton variety ST 5818GLT aspresented in Table 1.

TABLE 1 Objective Description of Cotton Variety ST 5818GLT and theReference Varieties ST 6182GLT USDA Descriptors ST 5818GLT ST 6182GLTAreas of Adaptation: Adapted Not Adapted Not tested Eastern AdaptedAdapted Delta Adapted Adapted Central Adapted Adapted Blacklands Notadapted Not adapted Plains Adapted Adapted Western Adapted AdaptedArizona Adapted Adapted San Joaquin Not adapted Not adapted OtherGeneral Plant Type: Plant habit: Intermediate Intermediate spreading,intermediate, compact Foliage: Intermediate Intermediate sparse,intermediate, dense Stem lodging: Erect Erect lodging, intermediate,erect Fruiting branch: Normal Normal clustered, short, normal Growth:Intermediate Intermediate determinate, intermediate, indeterminate Leafcolor: Medium Medium greenish yellow, light green, green green mediumgreen, dark green Boll shape: Length more Length more length less thanwidth, than width than width length equal to width, length more thanwidth Boll breadth: Broadest Broadest broadest at base, broadest atmiddle at middle at middle Maturity (% open bolls): 52.2 57.6 Plant: cmto 1^(st) fruiting branch: (from 34.0 27.4 cotyledonary node) No. ofnodes to 1^(st) fruiting branch: 6.5 5.7 (excluding cotyledonary node)Mature plant height (cm): (from 96.5 99.1 cotyledonary node to terminal)Leaf: (upper most fully expanded leaf) Type: Normal Normal normal, subokra, okra, super okra Pubescence: Sparse Sparse absent, sparse, medium,dense Nectaries: Present Present present, absent Stem pubescence:Intermediate Intermediate glabrous, intermediate, hairy Glands: absent,sparse, normal, more than normal Leaf: Normal Normal Stem: Normal NormalCalyx lobe: (normal is absent) Normal Normal Flower: Petals: Cream Creamcream, yellow Pollen: Cream Cream cream, yellow Petal spot: AbsentAbsent present, absent Seed: Seed index: (g/100 seeds, fuzzy basis) 9.68.9 Boll: Lint percent: 0.39 0.44 picked x pulled Boll type: Open Openstormproof, storm resistant, open Fiber properties: Method: HVI HVILength (inches, 2.5% SL): 1.16 1.14 Uniformity (%): 83.0 83.7 Strength,T1 (g/tex): 30.6 29.7 Elongation, E1 (%): 8.5 9.2 Micronaire: 4.17 4.57Resistance to nematodes, insects and pests: Not tested, susceptible,moderately susceptible, moderately resistant, resistant BollwormResistant Fall Armyworm Resistant Pink Bollworm Resistant Tobacco BudWorm Resistant

TABLE 2 Distinguishing Characteristics Between the Cotton Variety ST5818GLT and the Reference Variety ST 6182GLT DistinguishingCharacteristics ST 5818GLT ST 6182GLT Mature Plant Height, cm (fromcotyledonary 96.5 99.1 node to terminal) Maturity (% open bolls) 52.257.6 Seed Index (g/100 seeds) 9.6 8.9 Lint Percent (picked) 0.39 0.44Fiber Micronaire 4.17 4.57 Fiber Length 1.16 1.14 Fiber Strength, T1(g/tex) 30.6 29.7 Fiber Elongation, E1 (%) 8.5 9.2

1. A plant or part thereof of cotton variety ST 5818GLT, wherein arepresentative sample of seed of said cotton variety has been depositedunder ATCC Accession No. PTA-______.
 2. A seed of cotton variety ST5818GLT, wherein a representative sample of seed of said cotton varietyhas been deposited under ATCC Accession No. PTA-______.
 3. The plantpart of claim 1, wherein said plant part is a leaf, pollen, an ovule, acell, a root, a flower, or a pod.
 4. A plant, or a part thereof,produced by growing the seed of claim
 2. 5. A cotton plant having allthe morphological and physiological characteristics of cotton variety ST5818GLT, wherein a representative sample of seeds of said variety hasbeen deposited under ATCC Accession No. PTA-______.
 6. A cell or tissueculture produced from the plant, or a part thereof, of claim
 1. 7. Acotton plant regenerated from the cell or tissue culture of claim 6,said plant having all of the morphological and physiologicalcharacteristics of cotton variety ST 5818GLT, when grown under the sameenvironmental conditions, and wherein a representative sample of seed ofsaid cotton variety has been deposited under ATCC Accession NumberPTA-______.
 8. A method of producing the plant of claim 1, or a partthereof, said method comprising vegetative reproduction of the plant ofcotton variety ST 5818GLT, wherein a representative sample of seed ofsaid cotton variety has been deposited under ATCC Accession NumberPTA-______.
 9. The method of claim 8, wherein said vegetativepropagation comprises culturing regenerable cells or tissue from cottonvariety ST 5818GLT.
 10. A plant, or a regenerable part thereof, obtainedby vegetative reproduction from the plant, or a part thereof, of claim1, wherein said plant or a part thereof, has all of the morphologicaland physiological characteristics of cotton variety ST 5818GLT, whereina representative sample of seed of said cotton variety has beendeposited under ATCC Accession Number PTA-______.
 11. A method ofproducing a F1 hybrid cotton seed, comprising the steps of crossing theplant of claim 1 with a different cotton plant and harvesting theresultant F1 hybrid cotton seed.
 12. An F1 hybrid cotton seed producedby the method of claim
 11. 13. An F1 hybrid cotton plant, or a partthereof, produced by growing the hybrid seed of claim
 12. 14. A methodof introducing a desired trait into a cotton plant, said methodcomprising transforming the plant of claim 1 with a transgene thatconfers the desired trait, wherein the transformed plant otherwiseretains all of the morphological and physiological characteristics ofcotton variety ST 5818GLT and contains the desired trait.
 15. The methodof claim 15, wherein said desired trait is fiber quality, herbicideresistance, herbicide resistance, insect or pest resistance, diseaseresistance, including bacterial or fungal disease resistance, malesterility, modified carbohydrate metabolism or modified fatty acidmetabolism.
 16. A method of introducing a desired trait into a cottonplant, said method comprising transforming the plant of claim 13 with atransgene that confers the desired trait, wherein the transformed plantretains all of the morphological and physiological characteristics ofcotton variety ST 5818GLT and contains the desired trait.
 17. A cottonplant produced by the method of claim
 16. 18. A method of introducing asingle locus conversion into cotton variety ST 5818GLT, comprising: (a)crossing a plant of variety ST 5818GLT with a second plant comprising adesired single locus to produce F1 progeny plants; (b) selecting F1progeny plants that have the single locus to produce selected F1 progenyplants; (c) crossing the selected progeny plants with at least a firstplant of variety ST 5818GLT to produce backcross progeny plants; (d)selecting backcross progeny plants that have the single locus andotherwise comprise all of the physiological and morphologicalcharacteristics of cotton variety ST 5818GLT to produce selectedbackcross progeny plants; and (e) repeating steps (c) and (d) one ormore times in succession to produce selected second or higher backcrossprogeny plants that comprise the single locus and otherwise comprise allof the physiological and morphological characteristics of cotton varietyST 5818GLT, when grown under the same environmental conditions, whereina representative sample of seed of said cotton variety has beendeposited under ATCC Accession Number PTA-______.
 19. The method ofclaim 18, wherein the single locus confers male sterility, herbicidetolerance, insect resistance, pest resistance, disease resistance,modified fatty acid metabolism, modified carbohydrate metabolism, ormodified cotton fiber characteristics.
 20. A method of producing acommodity plant product comprising obtaining the commodity plant productfrom a plant of cotton variety ST 5818GLT, wherein a representativesample of seed of said cotton variety has been deposited under ATCCAccession Number PTA-______.
 21. The method of claim 20, wherein thecommodity plant product is lint, seed oil, or seed.